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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2009-04-27 19:54:26 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 21:44:48 -0700
commite7b7717247f61e2cf18ec47f91999065c59d1607 (patch)
treee644aa7eb5aa1063aaece0fddb14598c2f7404f3 /include/linux/usb.h
parentd2e9b4d6734db2327af3149d8ca7555307e10828 (diff)
USB: Don't reset USB 3.0 devices on port change detection.
The USB 3.0 bus specification defines a new connection sequence for USB 3.0 hubs and roothubs. USB 3.0 devices are reset and link trained by the hub before the port status change notification is sent to the host OS. This means that an entire tree of devices can be trained in parallel on power up, and the OS no longer needs to reset USB 3.0 devices. Change the USB core's hub port init sequence so that it does not reset USB 3.0 devices. The port status change from the roothub and from the USB 3.0 hub will report the SuperSpeed connect correctly. This patch currently only handles the roothub case. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
0 files changed, 0 insertions, 0 deletions